/* Poll for a state change, checking for possible
* modem crashes along the way (so we don't wait
* forever while the ARM9 is blowing up).
*
* Return an error in the event of a modem crash and
* restart so the msm_proc_comm() routine can restart
* the operation from the beginning.
*/
static int proc_comm_wait_for(void __iomem *addr, unsigned value)
{
#ifdef CONFIG_PROC_COMM_TIMEOUT_RESET
unsigned long timeout = TIMEOUT;
#endif
for (;;) {
if (readl(addr) == value)
return 0;
if (msm_check_for_modem_crash)
if (msm_check_for_modem_crash())
return -EAGAIN;
#ifdef CONFIG_PROC_COMM_TIMEOUT_RESET
udelay(1);
if (timeout-- == 0) {
if (msm_hw_reset_hook) {
pr_err("proc_comm: TIMEOUT. modem has probably "
"crashed.\n");
msm_pm_flush_console();
msm_hw_reset_hook();
} else {
pr_err("proc_comm: TIMEOUT. modem has probably "
"crashed. retrying.\n");
msm_pm_flush_console();
}
timeout = TIMEOUT;
}
#endif
}
}
static void debug_exec(const char *cmd, unsigned *regs)
{
if (!strcmp(cmd, "pc")) {
dprintf(" pc %08x cpsr %08x mode %s\n",
regs[15], regs[16], mode_name(regs[16]));
} else if (!strcmp(cmd, "regs")) {
dprintf(" r0 %08x r1 %08x r2 %08x r3 %08x\n",
regs[0], regs[1], regs[2], regs[3]);
dprintf(" r4 %08x r5 %08x r6 %08x r7 %08x\n",
regs[4], regs[5], regs[6], regs[7]);
dprintf(" r8 %08x r9 %08x r10 %08x r11 %08x mode %s\n",
regs[8], regs[9], regs[10], regs[11],
mode_name(regs[16]));
dprintf(" ip %08x sp %08x lr %08x pc %08x cpsr %08x\n",
regs[10], regs[13], regs[14], regs[15], regs[16]);
} else if (!strcmp(cmd, "reboot")) {
if (msm_hw_reset_hook)
msm_hw_reset_hook();
} else if (!strcmp(cmd, "irqs")) {
dump_irqs();
} else if (!strcmp(cmd, "kmsg")) {
dump_kernel_log();
} else if (!strcmp(cmd, "version")) {
dprintf("%s\n", linux_banner);
} else {
if (debug_busy) {
dprintf("command processor busy. trying to abort.\n");
debug_abort = -1;
} else {
strcpy(debug_cmd, cmd);
debug_busy = 1;
}
msm_trigger_irq(debug_signal_irq);
return;
}
debug_prompt();
}
